ch. 7 urinary system vocab
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| arteriole | small artery
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| bowman capsule | cup-shaped like capsule surrounding each glomerulus
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| calyx or calix | cup-like collecting region of the renal pelvis
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| catheter | tube for injecting or removing fluids
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| cortex | outer region
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| creatinine | a waste product of muscle metabolism
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| electrolyte | a chemical that carries an electrical charge in a solution
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| erythropoietin (EPO) | a hormone secreted by the kidney to stimulate the production of red blood cells
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| filtration | passive process whereby some substance, but not all, pass through a filter or other material
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| golmerulus | tiny ball or capillaries in cortex of kidney
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| hilum | depression or pit in that part of an organ where blood vessels and nerves enter and leave
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| kidney | one of two bean-shaped organs located behind the abdominal cavity on either side of the backbone in the lumbar region
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| meatus | opening canal
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| medulla | inner region
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| micturition | urination; act of voiding
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| nephron | the combination of golmerulus and renal tubule where filtration, reabsorption, and secretion take place in the kidney
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| nitrogenous waste | substance containing nitrogen and excreted in urine
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| potassium (K+) | a salt (electrolyte) secreted from the bloodstream into the renal tubules to leave the body in urine
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| reabsorption | in this process the renal tubules return materials necessary to the body back into the bloodstream
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| renal artery | carries blood to the kidney
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| renal pelvis | central collecting region in the kidney
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| renal tubule | microscopic tube in the kidney where urine is formed after filtration
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| renal vein | carries blood away from the kidney
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| renin | an enzymatic hormone synthesized, stored, and secreted by the kidney
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| sodium (Na+) | a salt regulated in the blood and urine by the kidneys
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| trigone | triangular area in the bladder where the ureters enter and the urethra exits
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| urea | major nitrogenous waste product excreted in urine
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| ureter | tube leading from each kidney to the bladder
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| urethra | tube leading from the bladder to the outside of the body
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| uric acid | nitrogenous waste excreted in the urine
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| urinary bladder | sac that holds urine
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| urination | process of expelling urine; also called micturition
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| voiding | emptying of urine from the urinary bladder
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